Emission spectra of σ-π-conjugated organosilicon copolymers consisting of alternating dimethylsilylene and aromatic units

M. Ch Fang, Akira Watanabe, M. Matsuda

研究成果: Article査読

73 被引用数 (Scopus)

抄録

Emission measurements were performed on a series of σ-π-conjugated organosilicon copolymers, -[(SiMe2)mA]n - (m = 1, 2, 3, 4, and 6), with alternating dimethylsilylene and π-conjugated units (A = phenylene, diphenylene, and anthranylene) in various solvents. The copolymers with m ≥ 2 exhibit a broad emission ascribable to an intramolecular charge transfer (CT) excited state resulting from the charge transfer between the dimethylsilylene and aromatic units. The solvatochromism of the emission spectra was observed for the organosilicon copolymers, where the emission maximum shifted to longer wavelength in polar solvents. The influence of the dimethylsilylene chain-length and the π-conjugated unit on the CT emission was investigated. The molecular orbital calculations on a model compound suggest that the vibronically structured emission is attributed to the π-character of the aromatic unit, and the structureless broad emission is ascribed to the σ-character of the Si-Si bond in the excited states. The emission lifetime and the quantum yield also show the dimethylsilylene chain-length dependence.

本文言語English
ページ(範囲)6807-6813
ページ数7
ジャーナルMacromolecules
29
21
DOI
出版ステータスPublished - 1996 10月 7

ASJC Scopus subject areas

  • 有機化学
  • ポリマーおよびプラスチック
  • 無機化学
  • 材料化学

フィンガープリント

「Emission spectra of σ-π-conjugated organosilicon copolymers consisting of alternating dimethylsilylene and aromatic units」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル